Feature:1. 1. A soft elastic puffer ball, shiny, easy to use, easy to play, and beneficial to both children and adults.2. 2. Material: High-quality TPR (thermoplastic rubber) material, silicone rubber. Hypoallergenic, non-toxic, free of BPA, phthalates and latex, safe for children and adults.3. 3. Relieve stress: It is an ideal stress ball for children, but it can also be used for throwing games, playing with gadgets, or even playing in the office. It is also suitable as an adult pressure ball.4. 4. Size: The diameter of each ball is about 9 inches. The size is right, it can be held well on the palm, and the weight is also very good.5. 5. Widely used: Reduce stress and anxiety, and increase the patient's patience. It is very suitable for children or adults suffering from ADD/ADHD, obsessive-compulsive disorder, autism or high anxiety disorder. Help them calm down and concentrate.6. 6. There is a hook on the top of the ball, which makes the ball more interesting, easy to swing and addictive.Specification:Material: TPRWeight: about 300 gramsSize: 20*20 cmRandom ColoPackage List:1*Decompression BallNote:1. Due to different displays and lighting effects, the actual color of the item may be slightly different from the color shown on the picture. Thank you!2. Due to manual measurement, please allow a measurement deviation of 1-3mm.